7165245326381 has 2 divisors, whose sum is σ = 7165245326382. Its totient is φ = 7165245326380.

The previous prime is 7165245326377. The next prime is 7165245326399. The reversal of 7165245326381 is 1836235425617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6659966037481 + 505279288900 = 2580691^2 + 710830^2 .

It is a cyclic number.

It is not a de Polignac number, because 7165245326381 - 2² = 7165245326377 is a prime.

It is a super-2 number, since 2×7165245326381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7165245346381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3582622663190 + 3582622663191.

It is an arithmetic number, because the mean of its divisors is an integer number (3582622663191).

Almost surely, 2^{7165245326381} is an apocalyptic number.

It is an amenable number.

7165245326381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7165245326381 is an equidigital number, since it uses as much as digits as its factorization.

7165245326381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 53.

The spelling of 7165245326381 in words is "seven trillion, one hundred sixty-five billion, two hundred forty-five million, three hundred twenty-six thousand, three hundred eighty-one".